The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 1979
Filed:
Nov. 07, 1977
Applicant:
Inventor:
Gunther Orth, Birken, DE;
Assignee:
Wolf-Gerate GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B / ;
U.S. Cl.
CPC ...
172 22 ; 111 89 ; 172112 ;
Abstract
A lawn perforating machine for forming rows of holes in the ground comprises a perforating roller which is adapted to roll on the ground and whose peripheral surface carries perforating tubes mounted for pivotal movement about axes extending parallel to the axis of the roller so that from the beginning to the end of their contact with the ground their axes remain substantially perpendicular to the ground. Part of the periphery of the roller is enclosed by a guide plate to intercept plugs of earth formed by the perforating tubes. In one embodiment a spring comb is disposed behind the roller to produce clean holes even in wet ground.